Apart from the obvious... "flaws" (red dots, PR sound, an annoying dev/production team) this trailer actually made aliens look worse than in previous trailers. In this one they literally feel like robots stopping before every turn and every change of direction, as if crawling two meters and then having to think "hmm... where should I go now...". Makes them feel very predictable and not at all as dynamic and shrewd as they probably should be. Just my 0.02$